<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8" />
    <title></title>
</head>
<body>
    <h1 th:text="${host}">Hello World</h1>
    <p>点击 <a th:href="@{/hello}">这里</a> 打个招呼吧</p>
</body>
</html>